单项选择题
A.三眼摄像机 B.继电器 C.无线路由 D.时序电源
A.9000×7500×2700mm B.9000×7700×2900mm C.9200×7500×2700mm D.9200×7700×2700mm
A.7800×6600×2800mm B.7800×6900×2600mm C.7600×6600×2600mm D.7600×6900×2800mm
A.5400×6700×1800mm B.5400×6800×1700mm C.5300×6800×1800mm D.5300×6700×1700mm
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